package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomerException;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.pojo.Category;
import com.itheima.reggie.pojo.Dish;
import com.itheima.reggie.pojo.Setmeal;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {

    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;

    /**
     * 根据id删除分类
     *
     * @param id
     */
    @Override
    public void remove(Long id) {
        //1.查询当前分类是否关联了菜品，如果已经关联，抛出一个业务异常
        QueryWrapper<Dish> queryWrapper1 = new QueryWrapper<>();
        queryWrapper1.eq("category_id", id);
        int count1 =dishService.count(queryWrapper1);
        if (count1>0){
            throw new CustomerException("当前分类关联了菜品,不能删除");
        }
        //2.查询当前分类是否关联了套餐，如果已经关联，抛出一个业务异常
        QueryWrapper<Setmeal> queryWrapper2 = new QueryWrapper<>();
        queryWrapper2.eq("category_id", id);
        int count2 = setmealService.count(queryWrapper2);
        if (count2>0){
            throw new CustomerException("当前分类关联了套餐,不能删除");
        }
        //3.正常删除
        this.removeById(id);
    }
}
